pr-watch — run log (append-only; one line per run)

format: run#N action= pr= outcome=<…> tokens=
2026-06-22T14:05:00Z run#142 action=reported pr=412 outcome=commented-flaky-ci tokens=14820 2026-06-22T13:55:00Z run#141 action=reported pr=408 outcome=flagged-conflict tokens=12110 2026-06-22T13:45:00Z run#140 action=none pr=- outcome=quiet tokens=2090